The Irish famine begins. Within 5 years it would become the UK's worst human disaster, with starvation and emigration reducing the population of Ireland itself by over 50%. The famine permanently changed Ireland’s and Scotland's demographics and became a rallying point for nationalist sentiment that pervaded British politics for much of the following century.

An angry crowd in London, protesting against John Russell's resignation as Prime Minister, is barred from Hyde Park by the police; they tear down iron railings and trample on flower beds. Disturbances like this convince Derby and Disraeli of the need for further parliamentary reform.